baber/WOPTO huggingface dataset:
Patent GB-238060-A (GB)
Title: Improvements in educational appliances
IPC: G09B17/00
Filed: 1924-07-11
Abstract: 238,060. Ramsay, N. R. C. July 11, 1924. Word and number building apparatus.-In an appliance for teaching spelling or arithmetic, of the kind comprising a shallow box 1 having one or more slots 2 or a series of apertures in the cover below which tapes bearing letters or numerals may be made to pass, each tape is carried by two roller or spools one of which is provided with a flange extending through the cover of the box to enable the tapes to be moved. The tapes 7 pass round a single roller 8 at one end of the box, and separate rollers 5 on a spindle 4 at the other end, the rollers 5 being provided with flanges 6 projecting through slots 3 in the cover. A bridge-piece 9 serves to hold the tapes in the same horizontal plane. A disc 10 is rotatably and detachably mounted on the cover of the box, and pictorial representations of the words to be spelt out on the tapes are provided on sectors of the disc, the representations being viewed through a sector-shaped opening in the cover. A clock dial 18 with movable hands 19, and a sheet of black paper 20 for marking with crayons or chalks are provided. An additional slot 23, Fig. 6, or a series of apertures may be provided in the bottom of the box to enable characters or numerals craried on the reverse side of the tapes to be viewed, the tapes being given a twist at two points. In a modification, the disc 10 is replaced by a series of leaves detachably hinged to the box cover.
Patent GB-216711-A (GB)
Title: Improvements in or relating to projectile toys
IPC: A63B65/08
Filed: 1923-06-27
Abstract: 216,711. Bartlett, A. J. June 27, 1923. Projectors.-In a toy in which a boomerang is projected by a stretched elastic, the projector is formed of a piece of material d folded on itself, each arm having a hole or notch for attaching the elastic. A gauge g for observing the tension of the elastic may be provided.
Patent GB-1503793-A (GB)
Title: Light-conducting fibres or rods
IPC: C03B37/023
Filed: 1975-04-23
Abstract: 1503793 Optical glass fibres CARL - ZEISS - STIFTUNG [trading as JENAER GLASWERK SCHOTT & GEN] 23 April 1975 [24 April 1964] 16742/75 Heading C1M [Also in Division G2] A light-conducting fibre or rod of improved mechanical strength consists of a core portion 1 and a reflective sheath 2 having a lower R.I. than the core portion and being surrounded by a reinforcing sheath 3, the coefficient of thermal expansion (Á) of which is lower than that of the core and reflective sheath materials. The R.I. of the reinforcing sheath 3 may be higher or lower than that of the reflective sheath portion 2. In the first embodiment (Fig. I ) a fibre has a glass core 1 of Á = 93 Î 10<SP>-7</SP> per  C., a reflective sheath 2 ot Á = 96 x 10<SP>-7</SP> per  C. and a reinforcing sheath 3 of Á = 53 Î 10<SP>-7</SP> per  C. In the second embodiment (Fig. 2, not shown) the core and sheath are as above, but the reflective sheath has Á = 57À5 x 10<SP>-7</SP> per  C. and is coloured black to absorb light. The fibre may be of the gradient type, e.g. of quartz. The fibres or rods may be made by the "rodpipe" or double-jet process or by drawing down a tube which has been internally coated with the core glass and has been placed inside a pipe made of the material of the reinforcing sheath.
Patent GB-112143-A (GB)
Title: An Improved Mechanical Hammer.
Inventor: PAULI CARL
IPC: B21J7/12
Filed: 1916-11-22
Abstract: 112,143. Pauli, C. Nov. 22, 1916 Percussive hand tools.-A mechanical hammer comprises a tool, a tool-holder, and a floating annular impact member with an eccentric guiding surface. In a modification, the hammer is of solid cylindrical form, and is contained within a crescent-shaped housing. As shown in Fig. 1, a shaft 24 is driven through a loose coupling 29 by a motor M, supported by springs 17, 18 in a casing 12 provided with handles 15, 16. The shaft 24 carries an eccentric E, Fig. 10, flanked by disks D which have perforations 38 to balance the eccentric. An annular hammer R is loosely mounted on the eccentric, and is operated by centrifugal force to strike the tool-holder T. In a modification, Fig. 13, the hammer is mounted in a crescent-shaped housing 40, and is pressed by a spring 45. In a further modification, Fig. 16, a solid hammer 51 is mounted in a housing 50 integral with the shaft, a detachable cover preventing lateral displacement of the hammer.
Patent GB-1034315-A (GB)
Title: Improvements in or relating to mattress assemblies
IPC: A47C27/045
Filed: 1963-04-30
Abstract: 1,034,315. Mattresses. UNITED STATES BEDDING CO. April 30, 1963 [May 22, 1962], No. 17002/63. Heading A4M. In a mattress construction of the type including a plurality of unconnected coil springs 10 arranged with their axes in parallel relationship and including panels of organic fibrous material 12 overlaying both the opposite ends of the coils, the coil ends 14 are bonded to the panels by adhesive 16 which completely surrounds the ends of the coil springs so that they are held against displacement with respect to the surfaces of the panels to which they are bonded. The coils may be arranged in staggered rows whereby the coil springs in adjacent rows are diagonally arranged one from the other. The mattress may be reinforced by additional coil springs in the outer rows of the assembly, Fig. 7 (not shown).
Patent GB-1298578-A (GB)
Title: Carboxylic acid esters of 3-formyl-butanol-1 and process for the manufacture thereof
IPC: C07C27/22
Filed: 1970-04-10
Abstract: 1298578 Carboxylic esters of 3-formylbutanol- 1 BADISCHE ANILIN- & SODA-FABRIK AG 10 April 1970 [12 April 1969] 17097/70 Heading C2C The carboxylic acid esters of 3-formylbutanol-1 of formula where R is alkyl (1-18 C), or a phenyl radical optionally substituted by 1 or 2 alkoxy or alkyl (1-4 C), chlorine atoms, amino groups or nitro groups are prepared by contacting a bis-(monocarboxylic acid ester) of butene-2-diol-1,4 with carbon monoxide and hydrogen in the presence of a carbonyl complex of rhodium at from 110 to 150 C. and a pressure of 150 to 800 atmospheres. The reaction may be in an inert solvent and the catalyst formed in situ with optional modifiers such as phosphorous acid esters or trisubstituted phosphines. Examples describe the preparation of 3-formylbutanol-l acetate.
Patent GB-857032-A (GB)
Title: Improvements in or relating to dough compositions
IPC: C08F265/06
Filed: 1958-05-29
Abstract: In a readily deformable resinous moulding composition comprising polymerizable methacrylate monomer and methacrylate polymer in a weight ratio of from 30:70 to 40:60, the polymer being in finely divided solid form and being solvatable by the monomer when admixed with it to form a non-rigid spreadable thickened soft dough, there is employed as the polymer a mixture of a homopolymer comprising polymethyl methacrylate and a copolymer of an acrylate selected from methoxyethyl acrylate, butoxyethyl acrylate and ethyl acrylate with methyl methacrylate, the copolymer being present in the mixture of homopolymer and copolymer in an amount of from 8% to 48% by weight, and the copolymer containing at least 7,5% by weight of the acrylate. The polymerizable methacrylate monomer may be methyl, propyl, butyl or tetrahydrofurfuryl methacrylate, ethylene dimethacrylate or mixtures thereof.  The composition may also contain fillers and pigments such as titanium dioxide, zinc oxide, aluminium oxide, barytes, diatomaceous earth, lead cyanamide, litharge, silica, barium carbonate and magnesium silicate, an ester plasticizer such as dibutyl phthalate, and catalysts and activators such as benzoyl peroxide, N, N-dimethyl-ptoluidine, N, N-diethylaniline, m-tolyl diethanolamine, phenyl diethanolamine or a sulphinic acid.
Patent GB-901437-A (GB)
Title: Improvements relating to test apparatus for testing electrical rectifier valves
Inventor: ZIPFEL VOLKER
IPC: G01R31/24
Filed: 1961-05-11
Abstract: 901,437. Electric-discharge tube testing. LICENTIA PATENT VERWALTUNGSG.m.b.H. May 11, 1961, No. 17253/61. Class 37. In apparatus for testing valve rectifiers for arc back by applying a critical reverse voltage and rate of fall of current at the end of a commutation period, a capacitance C (Fig. 1) is charged from an alternating supply over adjustable transformer T and charging diode V 3  and the charge is reversed in known manner during the time interval t o  to t 1 , (Fig. 2), by discharge through auxiliary control valve V 2  and inductance, forming a resonant circuit with the capacitor. Thereafter the capacitance charge is again reversed by discharge through test rectifier V 1  and the inductance, until the oscillatory current I in the LC circuit has decayed to half its peak value at time t 2  and the capacitance and choke voltages E c , E 1  have decayed to 0.87 of their peak values, whereby a reverse voltage is applied across the rectifier. A section L 1  of inductance L is immediately shorted out by auxiliary control valve V 4  so that thereafter the test rectifier current I has   an increased rate of change given by |di/dt| = Ec/L 2  where L 2  is the remaining inductance, until time t 3  when the current in V 4  ceases, having risen to a peak similar to that of the instantaneous oscillatory current and decayed expo-   nentially with time constant # = L 1 /R where   R is the resistance of the discharge circuit. The rate of current change may be given any required value by adjustably tapping the inductance, without increasing the stress on control valve V 2 , and the peak valve of oscillatory current may be approximated to normal load current and conducting period.
Patent GB-559740-A (GB)
Title: Improvements in or relating to flame and temperature rise detectors
IPC: G08B17/06
Filed: 1942-12-05
Abstract: 559,740. Thermal switches. GRAVINER MANUFACTURING CO., Ltd., and MATHISEN, A. Dec. 5, 1942, No. 17317. [Class 38 (v)] A temperature-sensitive device suitable for aircraft comprises a pair of high melting-point conductors 2 each surrounded by low melting- point conducting material 3 separated by oppositely-wound tapes 4, 4a (Fig. 4), or a single longitudinal perforated tape 6 (Fig. 6) such as to allow the material 3 when melted to exude through it and connect the conductor 2. The whole is closed in an insulating sleeve 5 which, together with the tapes 4, 4a may be of woven glass fibre. A protective sheathing 7 of rubber, rubber compound, or synthetic insulating compound. and a liquid-resisting sheath 8, may also be provided. Magnesium powder may be applied to the sleeve 5 or incorporated in sheath 7 to expedite melting of the coverings 3. Owing to the discontinuous nature of the insulation 4, 4a, a junction box for connecting the cable to an ordinary cable 19 has an upstanding part 10a. The Provisional Specification refers to the use of solder and paper as the material 3 and insulation, respectively.
Patent GB-685904-A (GB)
Title: Improvements in the separation of mixtures of isobutyl and methyl alcohols
IPC: C07C29/74
Filed: 1951-07-23
Abstract: <PICT:0685904/IV (b)/1> The separation of a mixture of isobutyl and methyl alcohols, in particular a mixture obtained from the reaction products of CO and H2 by treatment in a distillation column under pressure, as described in Specification 682,826, is effected by heating to slightly below the critical temperature under pressure, in particular at about the pressure at which the mixture was formed, and leading therethrough a gas free from or poor in methyl alcohol.  The process may be carried out in a still, advantageously provided with a column, which may be arranged beneath the column serving for the crude separation of the synthesis products, and need have only 1/10 th the cross-section thereof.  The gas free from or poor in methyl alcohol may be the initial synthesis gas or a fraction of the circulating gas freed from alcohol by cooling.  Synthesis reaction product gases are led by pipe 3 into pressure column 1 at about 250 atm. and 220 DEG  C.  Gases escaping at 4 are cooled, and separated in 11, condensate being supplied by pump 6 to the top of the column and, by pipe 13, to the reactor, while gases are returned to the reactor by pipe 14.  Part of these gases is fed by pipe 8 to still 9, heated to just above 200 DEG  C. and having a column 2 in which isobutyl alcohol is freed from methyl and is withdrawn by pipe 10.ALSO:<PICT:0685904/III/1> The separation of a mixture of isobutyl and methyl alcohols, in particular a mixture obtained from the reaction products of CO and H2 by treatment in a distillation column under pressure as described in Specification 682,826 is effected by heating to slightly below the critical temperature under pressure, in particular at about the pressure at which the mixture was formed, and leading therethrough a gas free from or poor in methyl alcohol.  The process may be carried out in a still, advantageously provided with a column, which may be arranged beneath the column serving for the crude separation of the synthesis products, and need have only 1/10th the cross-section thereof.  The gas free from or poor in methyl alcohol may be the initial synthesis gas or a fraction of the circulating gas freed from alcohol by cooling.  Synthesis reaction product gases are led by pipe 3 into pressure column 1 at about 250 atmosphere and 220 DEG C.  Gases escaping at 4 are cooled, and separated in 11, condensate being supplied by pump 6 to the top of the column and, by pipe 13, to the reactor, while gases are returned to the reactor by pipe 14.  Part of these gases is fed by pipe 8 to still 9, heated to just above 200 DEG C and having a column 2 in which isobutyl alcohol is freed from methyl and is withdrawn by pipe 10.
Patent GB-455563-A (GB)
Title: Improvements in bread-cutting and like machines
IPC: B26D1/157
Filed: 1935-06-17
Abstract: 455,563. Sharpening slicing-machine cutters. KEARNEY, J., 1A, College Street, Homerton, London. June 17, 1935, No. 17388. [Class 60] [See also Group VI] In a slicing-machine having a disc knife 29 rotating at the end of an oscillating arm 28, the link 8, in the mechanism which produces the oscillations, is disconnected when the knife is to be sharpened, and the arm 9 is rotated until it passes a screw stop 62 which prevents the arm from returning. The arm 9 is then moved until the knife is felt to engage the grinder 61 and the fly-wheel is turned to rotate the knife.
Patent GB-907758-A (GB)
Title: Diazo dyes derived from benzoylaminosulphonic acids and their use in silver-dye bleach processes
IPC: C09B35/027
Filed: 1960-05-17
Abstract: Diamines of formula <FORM:0907758/IV (b)/1> where Y and Z are H or monovalent substituents or together may form a further ring and R1 and R2 are H or hydrocarbon residues may be made by condensing an amine of formula <FORM:0907758/IV (b)/2> in a mol ratio of 2 : 1, with a ketone of formula <FORM:0907758/IV (b)/3> The condensation is preferably effected in an acid medium, at temperatures of up to 150 DEG C., and in the presence of an excess of amine.  Specified amines are 1-amino-2-methyl-, -ethyl- and -methoxy-benzenes, 1-amino-2,5- and -2,6-dimethyl - benzene and 1 - naphthylamine.  Chlorine atoms are further specified values for Y and Z.  Preferred ketones are of formula CmH2m + 1-CO-CH2-C5 + nH3 + 2n where m and n are 1 or 2, specified being phenylacetone, benzylethylketone and o, m and p-methylphenylacetone.  The diamines are used in the preparation of photographic dyes vide Group IV(c).  In Example (1) 1-benzyl-1,1-di-(31-methyl-41-aminophenyl)-ethane is prepared.ALSO:The invention comprises dyes of formula <FORM:0907758/IV (b)/1> in which in each of the two naphthalene rings one X is SO3H and the other SO3H or H; R1 is a carboxylic acid acyl residue, R11 is H or a substituent, Y and Z are H or substituents or, when vicinal, may form a further ring and R1 and R2 are H or hydrocarbon residues.  The dyes are made by coupling, preferably in an alkaline medium, a tetrazo compound of a diamine of formula <FORM:0907758/IV (b)/2> with a component of formula <FORM:0907758/IV (b)/3> Specified substituents are chlorine, methyl, ethyl, methoxy and ethoxy groups.  The dyes are particularly of use for photographic purposes, especially in the silver bleach process.  Examples are provided of the preparation of the purple dyes (1) 1-benzyl-1,1-di-(31-methyl-41-aminophenyl)-ethane \sQ 1-(31-acetylamino-benzoylamino)-8-naphthol-3,6-disulphonic acid and (2) 1-amino-2,5-dimethoxy-4-nitrobenzene --> 1-acetylamino-8- naphthol-3,6-disulphonic acid, reduced, --> 1-(4-benzoylaminobenzoylamino)-8-naphthol-3,6-disulphonic acid and the use of the latter in a cellulose acetate film.
Patent GB-1500454-A (GB)
Title: Apparatus for treating tyre components
IPC: B29D30/38
Filed: 1976-04-29
Abstract: 1500454 Conveyer systems GOODYEAR TIRE & RUBBER CO 29 April 1976 [22 May 1975] 17450/76 Heading B8A [Also in Division H5] Apparatus for treating lengths of material, e.g. tyre rubber, with high voltage electron beam radiation, comprises at least one source S of such radiation in a chamber 12 having labyrinthine entry and exit passages P-1, P-2, a plurality of parallel side-by-side coplanar conveyers C-1, C-2 (see Fig. 2, not shown), which travel through the chamber 12 and have independent drives able to run at different speeds from one another, unwinding means L-1, L-2, L-3 for delivering lengths of material to the conveyers, and winding means W-1 W-2, W-3 for receiving lengths of treated material from the conveyers. The conveyer drives may alternatively be synchronized for the treatment of wide lengths of material. The radiation sources S are each rotatably mounted on a traversing plate 36 which is movable along a pair of rails 38 transversely spanning the conveyers (see Fig. 2). Retroactive control systems for the conveyer drives and source positioning drives are described.
Patent GB-834815-A (GB)
Title: Radiographic method and apparatus
Inventor: CRAIG DWIN R
IPC: G03B42/02
Filed: 1956-06-06
Abstract: 834,815. Automatic X-ray intensity control systems. JOHNSON, R. N. June 6, 1956, No. 17454/56. Class 38 (4). Overall contrast on an X-ray film is reduced without loss of small-scale detail contrast by scanning the subject with a spot large compared with the scan-line spacing and with the detail required, and maintaining the total intensity of the X-rays transmitted through the subject substantially constant. As shown, an electron beam from a cathode 10 is caused to scan an X-ray producing target 22 by horizontal and vertical sweep generators 16 and 20 and hence a ray from aperture 24 in lead shield 26 forms a spot-scanning the subject 28 and producing an image on an X-ray sensitive film 32; the X-rays transmitted by the film are converted by scintillating element 34 into visible light which acts through photo-multiplier 36, amplifier 40, and control electrode 12 to keep the transmitted intensity substantially constant. Instead of the sweep generators 16 and 20, a scanning disc may be used between the X-ray source and the subject. The ratio of spot size to scan-line spacing may be from 3 : 1 to 10 : 1. Specification 790,509, describing a somewhat similar photographic method using visible light instead of X-rays, is referred to.
Patent GB-407690-A (GB)
Title: Improvements in the manufacture of yarn
IPC: D02G3/14
Filed: 1932-06-20
Abstract: 407,690. Spinning yarn directly from slivers of bast and long-leaf fibres. STONE, M. B., Canton Avenue, Milton, and WILLIAMSON, W. P., Ludlow, both in Massachusetts, U.S.A. June 20, 1932, No. 17473. Convention date, June 20, 1931. [Classes 120 (ii) and 120 (iii).] Yarn is made from slivers of bast fibres, such as flax, hemp, jute, and ramie, and of long leaf fibres, such as sisal and manilla, without converting the sliver into roving, by drawing the sliver in a spinning-frame without the use of gills and subjecting it to two or more slip-draft devices between the feed rollers and the drawing rollers so that it is supported at intervals of less length than the average staple, at least two devices being arranged to operate in succession on the sliver. One of the slip-draft devices is arranged near the nip of the delivery rollers so as positively to feed thereto fibres which are not in the grip of either the feed or delivery rollers. In the case of slivers containing extremely short fibres the natural cohesion of the fibres is increased without subjecting the sliver to twist as in a roving frame, for example by crimping the sliver. One slip-draft device comprises a pair of rollers of which one is driven and the other positively driven therefrom and so arranged as to be capable of movement relative thereto, and one of the devices may be constructed so as to effect a drag on the sliver. The apparatus shown is particularly suitable for jute, crimping being effected as the slivers are delivered from a gill box 4, Fig. 1, by means of a weight 8 which fits a guide channel and is periodically raised by the accumulating sliver delivered by rollers 9 ; alternatively fluted delivery rollers in pressure contact may effect the crimping. The crimped sliver 1, Fig. 4, is led from cans 10 to the drawing-rollers of a spinning-frame, the crimping being removed or equalized by an adjustably weighted or spring- controlled lever 14<a> and a conductor 14, or by a pair of rollers rotating at a slightly lower speed than that of the retaining rollers 15, or by a plain bar imposing a drag on the sliver. The slip-draft devices comprise fluted rollers 19, 19<a>, the roller 19 being positively driven and the roller 19<a> driven therefrom, in conjunction with a guide plate or trough 20 and a co-operating weight 20<a>. The roller 19<a> is mounted in a lever 21 so as to be capable of moving independently to and from the roller 19 but at all times remaining in gear. The distances between the nips of the devices 19, 19<a> and 20, 20<a>, and the rollers 19, 19<a>, and the drawing- rollers 16 are less than the average length of the fibres, and the speed of the roller 19 is greater than that of the feed rollers 15. The lever 21 may be held up by a hook to facilitate threading after breakage and when starting.
Patent GB-1254196-A (GB)
Title: Electrophotographic materials
Inventor: MEE JOHN DAVID
IPC: G03G5/06
Filed: 1969-04-03
Abstract: 1,254,196. Photoconductive composition. EASTMAN KODAK CO. 3 April, 1969 [8 April, 1968], No. 17499/69. Heading H1K. An organic photoconductor is sensitized by a cyanine dye comprising first and second nitrogen-containing-hetarocyclic nuclei having 5 or 6 carbon atoms in the heterocyclic ring, joined by a dimethine-linkage wherein the first nucleus is a carbazole nucleus joined at the 3-carbon atom thereof to the dimethine linkage and the second nucleus is joined by a carbon atom to the linkage. In the specific embodiment an electrophotographic plate is made by coating a mixture of a polyester, 4,4<SP>1</SP>-bis-(diethylamino) - 2,2<SP>1</SP> - dimethylphenylmethane and 1,3 - diethyl - 2 - # - (9 - methyl - 3 - carbazolyl vinylimidazo - [4,5 - b]- quinoxalinium iodide on an aluminium surface. Other suitable sensitizing dyes and organic photoconductors are specified.